Hoshikawa Kasumi

Hoshikawa Kasumi is a minor character and Hoshikawa Rei's grandmother.

Relationships
Hoshikawa Rei - Kasumi cares about her a lot and even though she is worried about her she supports her as member of AKB0048.

Hoshikawa Aimi - Kasumi cares about her a lot and is often worried about her as she knows how many risks Aimi took to return to Hikaristar and support Old Hikaristar. She disagreed with Aimi's decisions to graduate from AKB0048 after her parents die to help her as she didn't want her to give up on her dream because of that however Aimi decided to return anyway.

Hoshikawa Kei -

Hoshikawa Mikuru -

Trivia

 * Kasumi applied for AKB0048 audition when she was 17 years old but didn't pass the first round. After that she decided to concentrate on her studies and music and eventually decided to become a music teacher.